@article{AA_2018_30_3_a11,
     author = {R. L. Frank and A. Laptev},
     title = {Bound on the number of negative eigenvalues of two-dimensional {Schr\"odinger} operators on domains},
     journal = {Algebra i analiz},
     pages = {250--272},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2018_30_3_a11/}
}